255685

Appears in sequences

• Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting four doublets into the initially empty word.at n=27A194716
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..3 array extended with zeros and convolved with 1,4,6,4,1.at n=27A221994